/*
package com.course.server.config;

  import org.springframework.context.annotation.Configuration;
  import org.springframework.web.cors.CorsConfiguration;
  import org.springframework.web.servlet.config.annotation.CorsRegistry;
  import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

  @Configuration
  public class CorsConfig implements WebMvcConfigurer {

      @Override
      public void addCorsMappings(CorsRegistry registry) {
          registry.addMapping("/**")
                  .allowedOrigins("*")
                  .allowedHeaders(CorsConfiguration.ALL)
                  .allowedMethods(CorsConfiguration.ALL)
                  .allowCredentials(true)
                  .maxAge(3600);    //1小时内不需要再预检（发OPTIONS请求）
      }

  }
*/
